Insulator.



G. A. MEAD.

INSULATOR.

APPLICATION FILED JULY 29, 1908.

1,048,992, I Patented Dec. 31, l9i2.

2 SHEETS-SHEET 1.

G. A. MEAD.

INSULATOB.

nrmouml rILnn JULY as, 1908.

1,048,992, Patented Dec.31,1912

2 BHBETSSHEBT 2.

I QZE Q/ZW: 2% a I M 6 m4- UNITED srrnrpsrarnu'r carton GEORGE A. MEAD,01F MANSFIELD, OHIO, ASSIGNQR TO THE OHIO BRASS COMPANYT OF MANSFIELD,OHIO, A CORPORATION OF NEW JERSEY.

INSULATOR.

' Specification of Letters Patent.' Patented Dec. '31, 1912. I

Application filed July 29, 1908. Serial no. 445,858.

To all whom it may concern:

Be it known that I, GEORGE A. MEAD, a citizen of the United States,residing at Mansfield, in the county of Richland and State of Ohio, haveinvented certain new and useful Improvements in Insulators, of which thefollowing is a specification.

This invention relates to improvements in insulators and moreparticularly'to strain insulators, and the primary object of theinvention is to provide an improvedinsulator of this character forinsulatinga con ductor carrying high voltage from the ground or otherconductors.

A further object is to provide an improved, compact insulator of thischaracter for attaining the maximum resistance to mechanical strain andof suflicient dielectric strength to withstand the high voltage.

A further object is to provide improved means for shedding the water andwhich means also serves to increase the leakage distance between thespan wires.

A further object is to provide an improved insulator of this characterwhich will be simple, durable and cheap in construction, readilyinstalled and effective and efficient in operation.

To the attainment of these ends and the accomplishment of other new anduseful objects, as will appear, the invention consists in the featuresof novelty, in the construction and arrangement of the several partshereinafter more fully described and claimed and shown in theaccompanying drawings, illustrating an embodiment of the invention, andin which Figure 1 is an elevation of a span wire and the supportstherefor having 'af'pair of insulators applied thereto, constructed inaccordance with the principles of this invention. Fig. 2 is an enlargeddetail sectional view on line of Fig. 3. Fig. 3 is an elevation of oneof the faces of this improved insulator. Fig. 1 is a detail sectionalView on line l-l of F ig. 3. Fig. 5 is a view similar to Fig. 3, of amodified form of the invention. sectional view on line -6 of Fig. 5.Fig. 7 is a detail sectional view on line 77 of Fig. 5.

Fig. 6 is a detail.

Referring more particularly to the drawings, and in the exemplificationof the invention shown in Figs. 1 to 4, the numeral 10 designatesgenerally the insulator, which may be constructed of any suitableinsulat ing material, such as porcelain or the like,

and may be of any desired form, but is pref-' eraloly circular ordisk-like in configuration. Passing through the body of the insul'atoradjacent one of the faces and in a plane substantially paralleltherewith is an aperture 11, and the diametrically opposite portionsofthe body of the insulator adjacent the ends of the aperture-.11 arereduced to form enlarged openings 12 ad-.

jacent the periphery of the insulator, which ,openings formcontinuations of and have jacent the periphery of the insulator, whichopenings communicate with and form con tinuations of the aperture 13, toform an un I obstructed and straight passage therethrough for the spanwires, and the extremiinsulator which may be quickly installed.

The cnlargedopenings 12, let, or the reduced portions of the body of theinsulator adjacent the periphery thereof, serve to form a narrow,irregular or .undulatmw periphery 15 on the body of the insulator, sothat the entire edge of the insulator will not stand within the sameplane. 1

With this constructionthe web thus pro- 5 duced will form a guard whichextends entirely around the body from/a lane at the outer side of theaxis of one pa to the outer or farthersid'e of the axis the otherpassage and at both ends. In l the insulator is preferably supported 1-.edge, and one end of oneof the repair .nres 16 is 11 and 13 are spacedfrom each other and l are arranged on opposite sides of an imaginary-center line drawn between and sub stantially parallel with tlfe facesof the disk, and being disposed transversely with respect to each other,will cause the extremi- 30, ties of the span wires to be looped onewithin the other When the latter are secured to the insulator, so that aportion of the insulator will stand between the loops, which portionwill be under compression. With insulators of this type, the bodyportion is first shaped of soft material and while still soft theapertures for the span wires are formed therein by means of any suitabletool or in- I strument. In the manufacture, considerable difiiculty is'.experiencedwhere the apertures are curved with respect to the'plane ofthe face of the insulatora-to properly guide the instruInei t. throughthe body portion to form or position the apertures with respect to ,eachother to produce a wallbetween the apertures vwhichwill be thick enoughto hold the wire su'lliciently spaced to prevent arc ing and at the sametime form the apertures a sullieient distance from the respective faceof the insulator, owing to the fact that the v manufacturer is obligedto guess at the position and direction of the curved apertures/as he isunable to see or follow the active portion of the instrument through thebody. Furthermore, the wall between the apertures frequently becomesdisintegrated, owing to the fact that it not of sutlicient thickness,which not only permits the ivater to form an electrical connectionbetween the wires, but the wvall will crumble or break down under thestrain-of the wires. \Vith this improved form of nisulator and by providing apertures which pass straight through the body substantiallyparallel with 4 of sufficient thickness between the apertures,

thereby producing a wall of uniform thickness 1n all of the lnsulators.Furthermore, by arranging the apertures stralght through the insulator,the latter may be casilyinstalled by reason'o'f the fact that the endsof the span wires will pass readily through the apertures, withoutnecessitating the forcing of the wires through curved or irregularapertures. i

. 111 the eire'mplification of the invention shown in Figs. 5 to 7, thebody portion 10 of the insulator is provided with flanges 18, 19, whichproject from the peripheral e'dge 15 of the body portion 'at angles tothe faces of the insulator. These flanges diverge from each other toform a water shed, and each flange projects beyond the plane of one ofthe faces of the insulator. These flanges also extend around the entirebody portion and serve as'mcans for increasing the leakage distancebetween the span wires. A .ll' ith this improved form of insulator. it

will be apparel t that there is produced a compact insulator constructedfor attaining the maximum resistance to mechanical strain, and one 111which the electrical' strength of the insulator may be increased byincreasing the diameter of the insulator and also the diameter of theflanges, and by n'oviding an irregular edge or periphery to theinsulator the leakage distance between the span wires is greatlyincreased.

In order that the invention might be fully understood, the details ofthe foregoing einbodiment thereof have been thus described,

I bu t lVhatI claim as new is: 1. in insulator having means forconnecting conductors to opposite sides thereof and embodyingsubstantially straight passages, both ends of the respective passagesopening through thcsanie face of the insulator. said passages being disms'ed in close proximity and transversely with respect to each other soasto intersect; with a portion of the insulator betvnmn the passages.the extremities of the passages terminating short of the pe-v 1 ripheryof the body of the insulator, the pcriplwryof the body of the insulatorbeing shaped to form an until-cling open groove 2. An insulator havingmeans for connect iug conductors to opposite sides thereof and embodyingsubstantially straight passages,

both ends of the respective passages opening through the same face ofthe insulator said passages being disposed in close prox mity and.transversely with respect-to eacn other so as to intersect, with aportion of thejinsulator between the passages, the extremities of thepassages terminating short of the-periphery of the body of theinsulator, the periphery of the body of the insulator being shaped to'form an encircling open groove, the sides of which groove are deflectedlaterally to project beyond the respective faces of the insulator.

' Witnesses:

In testirnony whereo fllhaye' signefi 10, name to thisspeeificatiomi'n-the presence of two subscribing Witnesses, on this 23dday or July, A. D. 1 908'.*' j i I GEORGEA J MEADL- CHAS, SEEM, J.H..Jo0iiUM, Jr, y

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, -WashingtomDtG.

